[src/trunk]: src/sys/arch/usermode/usermode make sure splraise doesn't lower ...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fa0783d0bae2
branches:  trunk
changeset: 769267:fa0783d0bae2
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Sep 05 11:12:51 2011 +0000

description:
make sure splraise doesn't lower spl, and spllower doesn't raise it

diffstat:

 sys/arch/usermode/usermode/intr.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (36 lines):

diff -r b420c6b44ef2 -r fa0783d0bae2 sys/arch/usermode/usermode/intr.c
--- a/sys/arch/usermode/usermode/intr.c Mon Sep 05 11:10:36 2011 +0000
+++ b/sys/arch/usermode/usermode/intr.c Mon Sep 05 11:12:51 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: intr.c,v 1.1 2011/09/04 21:08:18 jmcneill Exp $ */
+/* $NetBSD: intr.c,v 1.2 2011/09/05 11:12:51 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2011 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.1 2011/09/04 21:08:18 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.2 2011/09/05 11:12:51 jmcneill Exp $");
 
 #include <sys/types.h>
 
@@ -47,7 +47,8 @@
                usermode_sigalrm_blocked = true;
        }
 
-       usermode_x = x;
+       if (x > usermode_x)
+               usermode_x = x;
 
        return oldx;
 }
@@ -60,5 +61,6 @@
                usermode_sigalrm_blocked = false;
        }
 
-       usermode_x = x;
+       if (usermode_x > x)
+               usermode_x = x;
 }